Plastic Pipe Gaskets

Letu Automotive manufactures plastic pipe gaskets, elastomeric seals,  elastomeric gaskets for joining plastic pipe, cast iron coupling gaskets, push-on joint gaskets and rubber seals, bonded seals, connector seals, durometer rubber seals and gaskets, seal mouldings, sealing profiles for pipes and tubes used in water distribution systems, waste drainage and sewerage systems, agricultural drainage and septic tank leach fields, and existing sewer and conduit rehabilitation from our facility in Hebei, China.

Materials: EPDM Rubber, Nitrle (NBR) Rubber, Silicone Rubber, etc.

DN: 63mm, 75mm, 90mm, 110mm, 125mm, 140mm, 180mm, 200mm, 440mm, etc. Custom sizes are available.

Usage: Smooth Wall and Corrugated Pipes, PVC Pipes, HDPE Pipes, PP Pipes, Prestressed Concrete Cylinder Pipes, Ductile Iron Pipes, etc.

Our Elastomeric Gaskets and Seals are manufactured to the following specifications:

• GB/T 21873-2008: Rubber seals – Joint rings for water supply, drainage and sewerage pipelines – Specification for materials
• ISO 4633:2002: Rubber seals — Joint rings for water supply, drainage and sewerage pipelines — Specification for materials
• BS EN 681-1:1996:  Elastomeric seals. Material requirements for pipe joint seals used in water and drainage applications. Vulcanized rubber
• ASTM F477 – 14 : Standard Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe

Sampling Specifications of our Pipe Gaskets and Seals:

NO.	Property & Performance		Unit	Value	Test Method
1	Hardness		IRHD	70	ISO 48
2	Tensile Strength		MPa	9.61	ISO 37
3	Elongation at break		%	510	ISO 37
4	Compression set	72 h at 23 °C	%	11	ISO 815
		24 h at 70 °C	%	16
		72 h at -10 °C	%	23
5	Ageing. 7 days at 70°C	Change in Hardness	IRHD	+1	ISO 48
		Change in Tensile Strength	%	-12	ISO 37
		Change in Elongation at break	%	-11	ISO 37
6	Stress relaxation	7 days at 23 °C	%	8	ISO 3384
		100 days at 23 °C	%	13
7	Volume change in water	7 days at 70 °C	%	+3	ISO 1817
8	Ozone Resistance			No Cracks (Pass)	ISO 1431-1